memory management Archives

AppWizard

September 23, 2026

Expert Opinions and Insights from the Tech Industry

The Android development community has historically addressed memory optimization reactively, but new performance requirements from Google Play, effective February 2027, emphasize proactive memory management. These requirements include metrics for dynamic memory usage, bitmap memory, and DEX code optimization, with apps needing at least 25% optimization coverage. Memory usage can now hinder releases even without local crash replication, necessitating its integration into the pre-production process alongside other performance metrics. Dynamic memory usage is defined as anonymous RSS plus swap, excluding file-backed data. Google Play will evaluate this across different application states and device performance categories. Bitmap memory is scrutinized for the retention of invisible bitmaps, and DEX optimization aims to reduce memory footprint and improve performance. Investigating memory growth involves using Android Studio’s Memory Profiler to monitor memory changes during specific user flows and conducting heap dumps to identify retained objects. Issues often arise from retained state, where components hold onto callbacks that reference image data, necessitating a focus on lifecycle management rather than merely cache size. Bitmap memory should be carefully managed, as the decoded size can significantly exceed the compressed file size. Downsampling images to match UI dimensions is crucial. Memory checks should occur before production, with a focus on establishing a memory budget based on actual measurements and defining representative memory scenarios for testing. A pre-release memory checklist includes running user flows repeatedly, testing on various devices, inspecting heap dumps, examining image configurations, and reviewing optimization metrics. Monitoring Android vitals and Play Console warnings is essential to detect potential issues before they lead to user-reported crashes.

AppWizard

September 21, 2026

When Memory Becomes a Release Metric: Preparing Android Apps for Google Play’s New Limits

In August 2026, Google Play announced new performance requirements for memory management that will be enforced starting February 2027. These requirements include metrics for dynamic memory usage, bitmap memory, and DEX code optimization. Applications that exceed these thresholds may face reduced visibility and publishing capabilities on the platform. Dynamic memory usage is defined as the sum of anonymous RSS and swap, excluding file-backed data. Google is focused on whether applications retain non-visible bitmaps and requires at least 25% coverage in DEX optimization. Memory issues can be difficult to reproduce, and developers are encouraged to use Android Studio’s Memory Profiler to investigate memory growth. A thorough investigation involves monitoring memory changes, taking heap dumps, and understanding reference paths. Bitmap memory should be carefully managed, as the runtime cost of images can exceed their file size. Google will provide real-world memory metrics through the Play Console, and teams are advised to establish memory budgets and perform pre-release checks to identify potential issues before they lead to out-of-memory (OOM) crashes.

Tech Optimizer

September 11, 2026

Improving Lakebase Postgres compute cache

Lakebase Postgres employs a disaggregated storage model that enhances data management through efficient caching, utilizing an object store like S3 for backups. The caching operates on two layers: within distributed storage for optimizing write and read performance, and on the Postgres compute side for ultra-fast access to frequently accessed pages. Traditional Postgres caching involves shared buffers and the OS page cache, which leads to double buffering and inefficiencies. Lakebase Postgres addresses these issues by implementing a local file cache (LFC) and larger shared buffers, allowing for more effective memory utilization without the drawbacks of the OS page cache. The shared buffers are set to a maximum of 1 GB, while the LFC can utilize up to 75% of DRAM. The introduction of huge pages reduces memory management overhead and improves performance, resulting in significant throughput increases and reduced latency in production environments. Recent enhancements have shown up to 2× throughput improvements and substantial reductions in CPU usage. The focus is now on extending these benefits to autoscaling Postgres computes, with plans to implement dynamic shared buffers and autoscaling huge pages.

AppWizard

September 6, 2026

Google orders Android apps to cut RAM use amid memory crunch

Google has introduced new performance standards for applications on Google Play to improve user experience and device efficiency by reducing memory consumption. Key areas of focus include dynamic memory management, efficient bitmap data utilization, and DEX code optimization. These standards aim to prevent system slowdowns and forced app closures due to insufficient memory. Google will provide tools within the Play Console for developers to monitor memory issues and access analytics through Android Vitals. The new performance thresholds will take effect in February 2027, with non-compliant applications facing publication restrictions. Additionally, all applications with login systems must support a zero-tap sign-in feature for enhanced user convenience and security.

Winsage

September 3, 2026

Windows 11: Memory Integrity enabled automatically from October

Microsoft plans to automatically activate Memory Integrity on a broader range of eligible systems starting October 2026, rolling it out through standard Windows quality updates. Prior to activation, Windows will assess hardware, drivers, and performance to ensure compatibility. Memory Integrity, part of Virtualization-based Security (VBS), uses the Windows hypervisor to create a secure environment for integrity checks on kernel code. Compatibility with drivers is crucial, as many older applications may not meet the stricter standards required for HVCI. Potential compatibility issues may arise with anti-cheat solutions, third-party input methods, and banking protection programs, which could lead to software malfunctions or boot failures. A readiness check will evaluate hardware compatibility, with eligible systems including Intel processors from the 8th generation, AMD processors from Zen 2, and Qualcomm Snapdragon 8180 or newer, along with specific RAM and storage requirements. The rollout will be gradual, and users who previously disabled HVCI will not face unexpected reactivation. Microsoft recommends updating affected applications or drivers in case of compatibility issues.

Tech Optimizer

September 1, 2026

Autoscaling Lakebase Postgres

Choosing a database instance size without prior knowledge of the workload can lead to inefficiencies and excessive compute usage. Lakebase Postgres addresses this with an autoscaling feature that eliminates manual sizing, utilizing in-place VM resizing and a monitoring algorithm for CPU, memory, and working set size. Lakebase Postgres separates compute and storage layers, allowing independent resizing of compute nodes without affecting the database. The autoscaling algorithm relies on three signals: CPU load (cpuGoalCU), memory use (memGoalCU), and compute-cache working set size (lfcGoalCU). The CPU load is monitored every five seconds, aiming to maintain it at or below 90% capacity. Memory usage is tracked at two frequencies: overall memory every five seconds and Postgres-specific memory every 100 milliseconds, with a goal to keep usage below 75% of allocated RAM. The compute cache evaluates active data access efficiency, adjusting size based on workload. The working set is estimated using a modified HyperLogLog algorithm that records timestamps for page accesses, allowing for distinct page estimates over various time frames. The algorithm projects future working-set growth to allocate sufficient cache while capping it at 75% of RAM. Resizing the compute involves four components: the autoscaler-agent, vm-monitor, Kubernetes scheduler, and NeonVM. Scaling up occurs when any of the three goals indicate a need for more resources, while scaling down includes verification to ensure sufficient memory remains for operations. Timely adjustments in both directions are prioritized to minimize costs.

AppWizard

August 31, 2026

Google enforcing new Android app memory limits in February

Google will implement new memory management policies for Android applications starting in February 2027, which will enforce specific memory limits based on device RAM. The defined limits are: - For 4GB devices: 2GB in the foreground, 1GB for user-perceived services, 1GB in the background. - For 6GB devices: 2.25GB in the foreground, 1.25GB for user-perceived services, 1.25GB in the background. - For 8GB devices: 2.25GB in the foreground, 1.5GB for user-perceived services, 1.5GB in the background. - For 12GB devices: 3.25GB in the foreground, 1.75GB for user-perceived services, 1.75GB in the background. - For 16GB devices: 4.25GB in the foreground, 2GB for user-perceived services, 2GB in the background. Devices with more than 16GB of RAM will be largely exempt from these restrictions. The changes are motivated by RAM shortages and the impact of artificial intelligence technologies on memory availability, aiming to maintain device performance and user experience. Apps exceeding these memory limits may face reduced functionality or removal from the Google Play Store.

AppWizard

August 28, 2026

Google clamps down on Android app RAM usage amid AI memory crisis — developers have until February 2027 to adapt to new memory-optimizing rules

Google has introduced new guidelines to improve memory management for Android applications due to a shortage of memory, requiring developers to reduce their apps' memory usage by February 2027. Smartphone manufacturers are responding to memory shortages by decreasing the memory in devices, with many entry-level smartphones now featuring only 4GB instead of the previous 6GB to 8GB. Microsoft is also optimizing Windows 11 for devices with 8GB of memory to ease the need for upgrades.

AppWizard

August 24, 2026

PSA: Android apps may soon shut down if they use too much RAM

Google announced a trend where new mobile devices are maintaining or decreasing their physical memory capacity due to rising memory prices, referred to as "RAMageddon." With the rollout of Android 17, a new mechanism allows the operating system to manage memory more efficiently by redirecting data usage to zRAM before forcibly closing apps. This feature helps maintain device performance but may still cause delays during data decompression. Developers are encouraged to optimize their applications for these new memory constraints. Additionally, users can enhance their device security by disabling location services, Bluetooth, reviewing app permissions, limiting background data, and disabling installations from unknown sources.

AppWizard

August 22, 2026

Samsung Galaxy Phones Could Get Smarter RAM Management With Android 17

Samsung Galaxy smartphones will benefit from the new Android 17 feature that imposes per-app memory limits, preventing any single app from monopolizing RAM. This feature is already active on Pixel devices and is expected to be adopted by other manufacturers, including Samsung, in the coming year. Android 17 allows the operating system to compress memory pages and terminate apps that exceed their memory limits, optimizing RAM usage without noticeable disruptions for users. This update aims to improve multitasking by allowing more applications to remain active in the background, particularly benefiting devices with limited RAM. Samsung's One UI already includes memory management tools, but the new system in Android 17 operates at a deeper level to enhance overall device performance. While no timeline for implementation has been announced, One UI 9 is based on Android 17, and the feature is anticipated to significantly improve user experience on Galaxy devices.